Francis Phoebus (Basque: Frantzisko Febus, French: François Fébus, Spanish: Francisco Febo) was king of Navarre (1479–1483), Viscount of Bearn, and Count of Foix (1472). He was the son of Gaston, Prince of Viana, and grandson of Queen Eleanor, whom he succeeded. She recommended him to ally with France.

His succession was approved by the Agramont party, while the Beaumont party fell behind Ferdinand the Catholic who started to build up political and military pressure on the Kingdom of Navarre in the run-up to the fully-fledged invasion of 1512.

During his brief reign, Francis Phoebus was under the protection of his mother, the regent Magdalena of Valois. He died young, arguably poisoned, and was buried in Lescar.